condition	mean	min	max
4 h after light	8.28992	7.66451	8.91533
8 h after light	8.62483	8.34473	8.90493
12 h after light	13.5123	13.3542	13.6704
4 h after dark	17.915100000000002	17.4953	18.3349
8 h after dark	15.409849999999999	15.4078	15.4119
12 h after dark	13.8275	13.2516	14.4034